package collections;
import java.util.*;
public class AddingGroups {

	public AddingGroups() {
		// TODO 自动生成的构造函数存根
	}
	
	public static void main(String[] args) {
		Collection<Integer> collection = new ArrayList<>(Arrays.asList(1,2,3,4,5));
		Integer[] moreInts = {6,7,8,9,10};
		collection.addAll(Arrays.asList(moreInts));
		
		Collections.addAll(collection, 11,12,13,14,15);
		Collections.addAll(collection, moreInts);
		
		List<Integer> list = Arrays.asList(16,17,18,19,20);
		list.set(1, 99);
	}

}
